| Function | Description |
| mgu74a | Bioconductor annotation data package |
| mgu74aACCNUM | Map Manufacturer ids to GenBank Accession Numbers |
| mgu74aCHR | Map Manufacturer IDs to Chromosomes |
| mgu74aCHRLENGTHS | A named vector for the length of each of the chromosomes |
| mgu74aCHRLOC | Map Manufacturer IDs to Chromosomal Location |
| mgu74aENZYME | Map Between Manufacturer IDs and Enzyme Commission (EC) Numbers |
| mgu74aENZYME2PROBE | Map Between Enzyme Commission Numbers and Manufacturer Identifiers |
| mgu74aGENENAME | Map Between Manufacturer IDs and Genes |
| mgu74aGO | Map between Manufacturer IDs and Gene Ontology (GO) |
| mgu74aGO2ALLPROBES | Map Between Gene Ontology (GO) Identifiers and all Manufacturer Identifiers |
| mgu74aGO2PROBE | Map Between Gene Ontology (GO) and Manufacturer Identifiers |
| mgu74aLOCUSID | Map between Manufacturer Identifiers and Entrez Gene |
| mgu74aMAP | Map between Manufacturer Identifiers and cytogenetic maps/bands |
| mgu74aORGANISM | The Organism for mgu74a |
| mgu74aPATH | Mappings between probe identifiers and KEGG pathway identifiers |
| mgu74aPATH2PROBE | Map between Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway identifiers and Manufacturer Identifiers |
| mgu74aPMID | Map between Manufacturer Identifiers and PubMed Identifiers |
| mgu74aPMID2PROBE | Map between PubMed Identifiers and Manufacturer Identifiers |
| mgu74aQC | Quality control information for mgu74a |
| mgu74aREFSEQ | Map between Manufacturer Identifiers and RefSeq Identifiers |
| mgu74aSUMFUNC | Map between Manufacturer Identifiers and Gene Function Summaries |
| mgu74aSYMBOL | Map between Manufacturer Identifiers and Gene Symbols |
| mgu74aUNIGENE | Map between Manufacturer Identifiers and UniGene cluster identifiers |